The Marshall Index: A Guide to Negro Periodical Literature, 1940-1948 by Albert P. Marshall, revised edition, Danky and Newman, 2002. Posted by ProQuest as a guide to their literature collections.
From the introduction:
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For researchers today, one of the rewarding aspects of Marshall’s Guide, and an important one, is the number of obscure, little-collected, and discontinued African-American serials that he includes. Who today is familiar, for example, with Pulse, Service, New Vistas, Negro Traveler, Informer, Whetstone, Sphinx. Ivy Leaf, or Oracle? Until the large and comprehensive bibliography of black periodicals collected and edited by James P. Danky and Maureen Hady of the State Historical Society of Wisconsin and published by Harvard University Press is widely disseminated, few will even know the existence of many of these rare sources.
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Superseded in some sense by African American newspapers and periodicals : a national bibliography by James P. Danky, but only in a sense.
The Marshall Index will always remain the first index of Black periodical literature and reflect the choices and judgments of its author.
Pass this along to your librarian friends and anyone interested in Black literature.